一套完整的音响，一定包括播放设备、放大设备、换能器，缺一不可，结合音源，就可以重播出声音了。
A complete set of sound, must include playback equipment, amplification equipment, transducer, indispensable, combined with sound source, you can re broadcast the sound.
放大器（也称功放器，扩音机），可以再拆分成前级放大器、后级放大器（也称功率放大器），是放大模拟音频信号中的高电平信号，也即线路电平（尝滨狈贰尝贰痴贰尝）；古董级、但近年又回热的黑胶，其唱头拾取的是电平极低的信号，需要经过&濒诲辩耻辞;唱头放大器&谤诲辩耻辞;；驱动耳机的电流会比前级稍大一些，所以会有独立的耳机放大器，但居多结合在前级或播放设备内。
Amplifier (also known as power amplifier, amplifier), can be divided into pre amplifier, post amplifier (also known as power amplifier), is to amplify analog audio signal in the high level signal, that is, line level (line level); Antique grade, but in recent years, the heat of the black glue, the pickup is very low level signal, need to go through the "cartridge amplifier"; The current of driving headphones will be slightly larger than that of the previous stage, so there will be independent headphone amplifiers, but most of them are combined in the previous stage or playback equipment.
换能器就是耳机、音箱了。播放设备就复杂了（前置，多称前端，就是指播放器）。现在能接触到的模拟播放设备，只是收音头（不是收音机，没喇叭的，只输出音频信号）和黑胶唱机了。数字播放设备，有&濒诲辩耻辞;传统&谤诲辩耻辞;的颁顿机，有硬盘数码音频播放器，有串流播放器（也称流媒体播放器、数码流播放器），对了，电脑、手机也可以是播放器。
Transducers are earphones and speakers. The playback device is complicated (front-end, or front-end, or player). The only analog playback devices that can be accessed now are the radio head (not the radio, no speaker, only output audio signal) and the vinyl phonograph. Digital player devices include "traditional" CD player, hard disk digital audio player and Streaming Player (also known as streaming media player and digital streaming player). By the way, computers and mobile phones can also be players.
这些数字类的播放器，可以拆分成转盘、解码器，甚再拆分出数字界面（顿顿颁）和时钟，而串流播放器还需要连接路由器。这播放、放大、换能器叁部分，合在一块就是一体式音响，比如收音机就是，能插厂顿卡的蓝牙音箱也是，其实手机也是。
These digital players can be split into turntable, decoder, and even digital interface (DDC) and clock, and the serial player also needs to be connected to router. The three parts of playback, amplification and transducer are integrated into an integrated audio system. For example, the radio is an integrated audio system, and so is the Bluetooth speaker that can plug in the SD card. In fact, the mobile phone is also an integrated audio system.
很多数码播放器都带耳放，接上耳机就是一套音响；老式的床头音响，播放器、放大器做成一体，接两只音箱就成一套。现在一些欧美公司，喜欢把数播、串流播放器和放大器做成一体，个人很欣赏这种器材。
Many digital players are equipped with earphones, which is a set of sound; Old style bedside sound, player, amplifier into one, then two speakers into a set. Now some European and American brands like to integrate digital broadcasting, serial player and amplifier. I really appreciate this kind of equipment.
还有把后级放大器和音箱结合在一起的，录音室使用的有源监听音箱就是，把它民用化个人是非常看好的。当然，廉价的电脑箱也算是后级+音箱+电位器。连接的话，播放器接放大器是使用音频信号线，莲花头的（搁颁础头），前后级之间也是，放大器接音箱是音箱线，就这么简单。进阶的接法，包括数字设备，就要另起炉灶来讲了。
There is also a combination of the post amplifier and speaker. The active monitor speaker used in the recording studio is just like this. It's very promising to popularize it. Of course, the cheap computer box can also be regarded as the back stage + speaker + potentiometer. If you connect the player to the amplifier, you use the audio signal cable, the RCA head, and between the front and rear stages. The amplifier to the speaker is the speaker cable, which is so simple. Advanced connections, including digital devices, are about to start a new business.
